Adapter: 9004 Male > 9007 Female Chevrolet and ECE requirements

and ECE requirements

and waste disposal

Unfortunately: Headlight ballasts

Stainless steel power and ground terminals

Adapter: 9004 Male > 9007 Female Chevrolet and ECE requirementsUseful: Sometimes "this" just doesn't plug into "that" When the industry standard for aftermarket lighting calls for mostly 9006 Female inputs, these adapters will come in handy. Go Direct: If your vehicle's stock headlight circuit is strong enough to power ballasts without a relay harness, these are the perfect solution for non 9006 headlight systems since almost all HID ballasts require a 9006 female input. Standard: These are standard equipment on